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[4.1] disable CFL Alias Analysis by default; fixes known cases of indeterministic build output #309

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merged 3 commits into from
Aug 22, 2024
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[4.1] disable CFL Alias Analysis by default; fixes known cases of indeterministic build output #309

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387c2b8
disable CFL Alias Analysis by default
spoonincode Aug 21, 2024
bec0d6c
remove now removed -fno-cfl-aa from test builds
spoonincode Aug 22, 2024
29f4232
change docs for no-cfl-aa removal
spoonincode Aug 22, 2024
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2 changes: 1 addition & 1 deletion docs/03_command-reference/cdt-cc.md
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ compiler options:
-finline-hint-functions - Inline functions which are (explicitly or implicitly) marked inline
-fmerge-all-constants - Allow merging of constants
-fnative - Compile and link for x86-64
-fno-cfl-aa - Disable CFL Alias Analysis
-fcfl-aa - Enable CFL Alias Analysis
-fno-elide-constructors - Disable C++ copy constructor elision
-fno-lto - Disable LTO
-fno-post-pass - Don't run post processing pass
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2 changes: 1 addition & 1 deletion docs/03_command-reference/cdt-cpp.md
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Expand Up @@ -49,7 +49,7 @@ compiler options:
-finline-hint-functions - Inline functions which are (explicitly or implicitly) marked inline
-fmerge-all-constants - Allow merging of constants
-fnative - Compile and link for x86-64
-fno-cfl-aa - Disable CFL Alias Analysis
-cfl-aa - Enable CFL Alias Analysis
-fno-elide-constructors - Disable C++ copy constructor elision
-fno-lto - Disable LTO
-fno-post-pass - Don't run post processing pass
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2 changes: 1 addition & 1 deletion docs/03_command-reference/cdt-ld.md
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Expand Up @@ -21,7 +21,7 @@ ld options:
-L=<string> - Add directory to library search path
-fasm - Assemble file for x86-64
-fnative - Compile and link for x86-64
-fno-cfl-aa - Disable CFL Alias Analysis
-fcfl-aa - Enable CFL Alias Analysis
-fno-lto - Disable LTO
-fno-post-pass - Don't run post processing pass
-fno-stack-first - Don't set the stack first in memory
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4 changes: 2 additions & 2 deletions docs/man/cdt-cc.1.md
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Expand Up @@ -167,9 +167,9 @@ execution in Antelope block chain virtual machines.

Compile and link for x86-64

**`--fno-cfl-aa`**
**`--fcfl-aa`**

Disable CFL Alias Analysis
Enable CFL Alias Analysis

**`--fno-elide-constructors`**

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4 changes: 2 additions & 2 deletions docs/man/cdt-cpp.1.md
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Expand Up @@ -187,9 +187,9 @@ execution in Antelope block chain virtual machines.

Compile and link for x86-64

**`--fno-cfl-aa`**
**`--fcfl-aa`**

Disable CFL Alias Analysis
Enable CFL Alias Analysis

**`--fno-elide-constructors`**

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4 changes: 2 additions & 2 deletions docs/man/cdt-ld.1.md
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Expand Up @@ -39,9 +39,9 @@ execution in Antelope block chain virtual machines.

Compile and link for x86-64

**`--fno-cfl-aa`**
**`--fcfl-aa`**

Disable CFL Alias Analysis
Enable CFL Alias Analysis

**`--fno-lto`**

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1 change: 0 additions & 1 deletion tests/unit/CMakeLists.txt
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Expand Up @@ -5,7 +5,6 @@ include( CDTMacros )

macro(add_cdt_unit_test TEST_NAME)
add_native_executable(${TEST_NAME} ${TEST_NAME}.cpp)
target_compile_options(${TEST_NAME} PRIVATE -fno-cfl-aa)
if(CMAKE_BUILD_TYPE STREQUAL "Release")
target_compile_options(${TEST_NAME} PRIVATE -O2)
elseif(CMAKE_BUILD_TYPE STREQUAL "Debug")
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8 changes: 4 additions & 4 deletions tools/include/compiler_options.hpp.in
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Expand Up @@ -80,9 +80,9 @@ static cl::opt<bool> fno_lto_opt(
"fno-lto",
cl::desc("Disable LTO"),
cl::cat(LD_CAT));
static cl::opt<bool> fno_cfl_aa_opt(
"fno-cfl-aa",
cl::desc("Disable CFL Alias Analysis"),
static cl::opt<bool> fcfl_aa_opt(
"fcfl-aa",
cl::desc("Enable CFL Alias Analysis"),
cl::cat(LD_CAT));
static cl::opt<bool> fno_stack_first_opt(
"fno-stack-first",
Expand Down Expand Up @@ -617,7 +617,7 @@ static Options CreateOptions(bool add_defaults=true) {
else
pp_dir = eosio::cdt::whereami::where();

if (!fno_cfl_aa_opt) {
if (fcfl_aa_opt) {
copts.emplace_back("-mllvm");
copts.emplace_back("-use-cfl-aa-in-codegen=both");
agopts.emplace_back("-mllvm");
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